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Muscle and genotype effects on fatty acid composition of goat kid intramuscular fat
Francisco Pe?a,Manuel Juárez,Adriana Bonvillani,Pilar Garcia
Italian Journal of Animal Science , 2011, DOI: 10.4081/ijas.2011.e40
Abstract: Little is known about the fatty acid composition of the major muscles in goats from different breeds. Forty entire male suckling kids, 20 Criollo Cordobes and 20 Anglo Nubian, were slaughtered at 75 days of age and the fatty acid composition of their longissimus thoracis (LT) and semitendinosus (ST) muscles was analysed to clarify the effects of genotype and muscle type on goat kid meat. Genotype had a great influence on the fatty acid composition of goat kid meat. Meat from Criollo Cordobes had greater saturated (P<0.001) and lower monounsaturated (P<0.001) and polyunsaturated fatty acids (P=0.002) concentration than meat from Anglo Nubian, showing higher saturated fatty acids (SFA). On the other hand, intramuscular fat content from both genotypes was higher (P=0.042) in ST muscle, while the lowest cholesterol levels were observed in ST of Criollo Cordobes (P=0.038). That higher fat content resulted in lower relative contents of total polyunsaturated (P<0.001) and n-3 (P=0.002) fatty acids due to the lower contribution of the membrane phospholipids.
Effect of castration on feedlot performance and some serum metabolites of Nubian male kids  [PDF]
Assia I. A. M. Nasr,,M. Atta,,M. I. Elmahi,A. O. Mohammed
Research Opinions in Animal & Veterinary Sciences , 2011,
Abstract: Ten male Nubian kids, 6 months old, were used to investigate the effect of castration on production performance and some blood metabolites (glucose, total cholesterol, total protein, albumin, globulin, urea and uric acid). Five males were castrated using Burdizzo method, while equal number and weight of animals remained intact. The kids were individually accommodated and fed ad libitum on a concentrate diet and roughage. The examined traits were taken from both of the experimental groups for two weeks adaptation period followed by eight weeks experimental period. Independent student t-test was used to examine the significance of differences between the intact and castrated Nubian kids. The study showed no significant differences between the two experimental groups on most of the examined feedlot performance traits and blood metabolites. Intact kids had significant higher weight gain and blood urea. Blood glucose level was significantly higher for the castrated kids. The study concluded that castration of goats exerted no effect on feed consumption and metabolism. The study gave encouraging highlights on castrating bucks to fulfill goat meat market options.
Seasonal variation in ovulatory activity of nubian, alpine and nubian X criollo does under tropical photoperiod (22° N)
Rivera Lozano, María Teresa;Díaz Gómez, Martha Olivia;Urrutia Morales, Jorge;Vera ávila, Héctor;Gamez Vázquez, Héctor;Villagomez-Amezcua Manjarrez, Eugenio;Aréchiga Flores, Carlos Fernando;Escobar Medina, Francisco Javier;
Tropical and subtropical agroecosystems , 2011,
Abstract: in the present study, seasonal variation in ovulatory activity of nubian, alpine and criollo x nubian goats in the semiarid region of central-northern mexico (22° 14' n) was examined. the study was conducted under natural photoperiod and climate conditions during a whole year. eight female goats per breed were grouped separately and exposed to visual, olfactory and audible signals of bucks. blood samples were obtained twice per week and serum progesterone concentrations were determined. all goats presented a clear pattern of seasonal ovulatory activity based on serum progesterone profiles. length of the ovulatory activity period did not differ between genotypes (p >0.10), and had an average duration of 4.3 months. nevertheless criollo x nubian goats presented greater individual variation in dates of onset and end as well as length of this period (p <0.05). results indicate that female goats of genotypes which differ in latitude of origin, express a similar restricted pattern of seasonal ovulatory activity when subjected to small annual changes in phtoperiod, adequate nutrition and incomplete socio-sexual stimulus.
Investigation on genetically modified soybean (RoundUp Ready) in goat nutrition: DNA detection in suckling kids  [cached]
R. Tudisco,M. I. Cutrignelli,S. Calabrò,A. Guglielmelli
Italian Journal of Animal Science , 2010, DOI: 10.4081/ijas.2007.1s.380
Abstract: The presence of plant DNA fragments in blood, kidney, hearth, liver, spleen and muscle tissue from suckling kids was investigated by using PCR approach. Fragments of high copy number chloroplast and low copy soybean lectin genes were found in several samples of kids whose mother were fed diet containing conventional (control) or transgenic soybean (treated). Only in treated group, fragments of 35S and CP4 epsps soybean genes were found in several samples.
Effect of goat production systems on meat quality and Conjugated Linoleic Acid (CLA) content in suckling kids  [cached]
A. Caputi Jambrenghi,M. A. Colonna,F. Giannico,F. Giannico
Italian Journal of Animal Science , 2010, DOI: 10.4081/ijas.2007.1s.612
Abstract: The effect of goat production systems was evaluated on the concentration of conjugated linoleic acid (CLA) in meat obtained from suckling kids. Twenty male Ionica suckling kids fed only on maternal milk were subdivided into two groups of 10 subjects each according to their dams’ feeding treatment: kids in Group I were raised under dams reared by an intensive production system, while those of Group E were raised under dams grazing on pasture. Kids were slaughtered when 45 days old. The goat production system had no effect on kids’ growth rates, slaughtering yield and on the percentages of lean, fat and bone of the lumbar region and pelvic limb cuts. The pH value of the Longissimus lumborum (Ll) muscle 45 min after slaughter was higher in Group I (6.73 vs 6.54; P<0.05). Meat colour of Group E kids was lighter (50.63 vs 48.86) and showed greater (P<0.05) yellowness (13.42 vs 11.93) and Chroma values (14.92 vs 13.45). Cooking loss was higher in Group E (31.51 vs 26.98%; P<0.05), but meat tenderness of the Ll muscle was better (peak force of 2.86 vs 3.58 kg/cm2; P<0.05). Meat chemical composition did not differ between the two groups for either raw or cooked samples. On the whole, suckling kids raised under grazing goats showed a higher total CLA concentration in both raw (2.57 vs 2.25% on total fatty acids) and cooked meat (1.85 vs 1.44%), although the differences were not significant.
The Effect of Fat Supplementation in Shami Goat Diets on Milk Production and Composition, Does Body Weight and Growth Performance of Their Suckling Kids
Fawzi M. AL-Dabbas,Azmi D. Hawari
Pakistan Journal of Biological Sciences , 2011,
Abstract: The aim of this study was to evaluate the effect of feeding a dry fat source to Shami does on their milk production and composition, body weight change, weaning weight and average daily gain of their suckling kids. For this purpose we used thirty two multiparous Shami does weighing (47.431.38 kg) and randomly assigned into four dietary treatments in a Completely Randomized Design (CRD) set. Does were housed with their suckling kids and fed one of four isonitrogenous total mixed rations containing 0, 2, 3 or 4% of dry fat. Milk production and milk fat content were higher (p<0.05) for fat treated does, with no differences between 2% fat level and control group while there was no differences among groups in milk protein content. Final body weight of does was not affected by fat supplementation while body weight changes were higher (p=0.05) for fat treated groups. Weaning weight and average daily gain of suckling kids were increased (p=0.05) for fat treated does, with no differences between 2% fat level and control group. It is concluded that supplemental fat to does rations at 3 or 4% during their postpartum period can improve their milk production and milk fat content, as well as body weight change of does, weaning weight and average daily gain of suckling kids, without any effect on their milk protein content.
Plasma Vitamin C Concentrations in Nubian and Saanen Goats During Pregnancy and Lactation
H.E. Mohamed,A.C. Beynen
Journal of Animal and Veterinary Advances , 2012,
Abstract: Plasma vitamin C concentrations were determined in Saanen and Nubian goats kept in Sudan and while they were either pregnant or lactating. The plasma vitamin C concentrations were lower during pregnancy than during either pre-pregnancy or lactation. The concentrations were lower in the Saanen than in the Nubian goats. Vitamin C concentrations in milk from the Saanen goats were lower than in milk from the Nubian goats, but absolute excretion was higher in the former breed. Saanen kids had lower plasma vitamin C concentrations than Nubian kids. It is suggested tentatively that the low vitamin C status of the Saanen goats during pregnancy is associated with less resistance to disease.
Estimation of Variance Components on Number of Kids Born in a Composite Goat Population  [cached]
Chittima KANTANAMALAKUL,Panwadee SOPANNARATH,Sornthep TUMWASORN
Walailak Journal of Science and Technology , 2010, DOI: 10.2004/vol7iss1pp33-40
Abstract: Records on 1,487 parturitions from a composite population of Anglo-Nubian, Saanen, Native and crossbred goats at Yala Livestock Research and Breeding Center, Department of Livestock Development during the years 1995 and 2005 were estimated for variance components and parameters for number of kids born using REML procedure. Single-trait analysis included parity, year-season at kidding, covariates of additive and heterosis breed effects, direct genetic effects, permanent environmental and residual effects. The results showed that direct additive breed effects for Anglo-Nubian and Saanen as a measure of deviation from Native goats for the number of kids born were 0.02 and -0.09 heads, respectively. Heterosis breed effects in Anglo-Nubian ′ Native and Saanen ′ Native crosses were positive with increasing numbers of kids born at 0.11 and 0.31 heads, respectively. Direct heritability and permanent environmental variance as a proportion of phenotypic variance for number of kids born were found to be 0.04 and 0.02, respectively.
Efficacy of Tylosine against Clinical Cryptosporidiosis in Goat Kids  [PDF]
Ethem Mutlu Temizel*, Sezgin Senturk, Onur Girisgin1, Bayram Senlik1 and Gulsah Demir
Pakistan Veterinary Journal , 2011,
Abstract: The aim of the present study was to evaluate tylosine efficacy administered by intramuscular for treatment of cryptosporidiosis in naturally infected goat kids. These animals were randomly assigned to test group (n=10) and control (n=10) group after routine clinical examination. All kids showed mild mental depression, decrease in suckling reflex and diarrhea in different severity. Fecal samples were analyzed via virological, bacteriological and coccidial examinations. The consistency of feces was assessed as pastose, semiliquid, or liquid. The rates of infection of the samples were evaluated semi-quantitatively. Tylosine was given by intramuscular route to test group - 2 at a dosage of 10 mg/kg of body weight, twice a day for 5 days. However, isotonic saline solution (1.0 ml) was used by intramuscular route to the control group, once a day for 5 days. Hematological results of all the kids were within normal limits except for hematocrit rates which were mild high in 15 kids as a result of dehydration. However, OPG was not detected in both of group after treatment. It was suggests that tylosine applied animals has been shown more rapid recovery than control group. Tylosine may be useful in order to reduce of treatment period in the disease. In future, more detailed studies which evaluate the effects of tylosine in goat kids with cryptosporidiosis are needed.
Cardiovascular, endocrine and behavioural responses to suckling and permanent separation in goats
Louise Winblad von Walter, Lena Lidfors, Andrzej Madej, Kristina Dahlborn, Eva Hydbring-Sandberg
Acta Veterinaria Scandinavica , 2010, DOI: 10.1186/1751-0147-52-51
Abstract: Four studies were performed with seven goats kept with their first-born kid in individual boxes. The goats were videotaped and heart rate and arterial blood pressure were recorded every minute by telemetry from parturition until 24 hours after separation. One to two days after parturition, Study 1 was performed with analyses of heart rate and blood pressure around a suckling. In Study 2, performed 3-5 days after parturition, blood sampling was done before, during and after suckling. Study 3 was performed 4-6 days post partum, with blood sampling before and after a permanent goat and kid separation. In addition, vocalisations were recorded after separation. Blood samples were obtained from a jugular vein catheter and analysed for plasma cortisol, β-endorphin, oxytocin, and vasopressin concentrations. Study 4 was performed during the first (N1) and second nights (N2) after parturition and the nights after Study 2 (N3) and 3 (N4). Heart rate, blood pressure and time spent lying down were recorded.The kids suckled 2 ± 0.2 times per hour and each suckling bout lasted 43 ± 15 s. In Study 1, heart rate and blood pressure did not change significantly during undisturbed suckling. In Study 2, plasma cortisol (P ≤ 0.05 during suckling and P ≤ 0.01 five minutes after suckling) and β-endorphin (P ≤ 0.05) concentrations increased during suckling, but oxytocin and vasopressin concentrations did not change. In Study 3, the goats and kids vocalised intensively during the first 20 minutes after separation, but the physiological variables were not affected. In Study 4, heart rate and arterial blood pressure declined gradually after parturition and were lowest during N4 (P ≤ 0.05) when the goats spent longer time lying down than during earlier nights (P ≤ 0.01 during N1 and N3 and P ≤ 0.05 during N2).Suckling elevated plasma cortisol and β-endorphin concentrations in the goats. The intensive vocalisation in the goats after separation, earlier suggested to indicate stress, was not accom
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