Study on the energy and protein requirements in goats

Voicu, I.; Burlacu, G.; Criste, Rodica‐Diana; Voicu, D.

doi:10.1080/17450399309386058

Cited by 7 publications

(3 citation statements)

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“…In addition, the observed NE m (197 kJ/kg EBW 0.75 ) was also lower than those reported for sheep of 269 (Rattray et al, 1973) and 259 kJ/kg BW 0.75 (Blaxter, 1967). The ME m found in this study were considerably lower than those previously reported for goats: 400 kJ/kg BW 0.75 for pregnant and lactating goats up to 8 mo of age (Voicu et al, 1993), 438 kJ/kg BW 0.75 for mature goats (AFRC, 1998), 462 kJ/kg BW 0.75 for mature goats over 18 mo of age (Luo et al, 2004b), 501 kJ/kg BW 0.75 for mature dairy goats (NRC, 2007), and 542 kJ/kg BW 0.75 for mature and growing goats (Salah et al, 2014).…”

Section: Energy Requirements For Maintenancecontrasting

confidence: 90%

Energy and protein requirements for maintenance of dairy goats during pregnancy and their efficiencies of use1

Härter

Lima

Silva

et al. 2017

Journal of Animal Science

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It has been suggested that maintenance requirements are similar among animals of different physiological stages; however, important physiological changes occur in the maternal body during pregnancy. Therefore, the aim of this study was to determine the energy and protein requirements for the maintenance of pregnant dairy goats and to estimate their efficiency of energy and protein utilization for maintenance and pregnancy. We used 66 multiparous pregnant goats having 49.0 ± 1.59 kg initial BW (around the third or fourth parturition) arranged in a randomized block design with a 3 × 3 factorial scheme including slaughter at different days of pregnancy (DOP; 80, 110, and 140 d) and feed restriction (0, 20, and 40% feed restriction). The comparative slaughter technique was used to estimate energy and protein maintenance requirements. Goats slaughtered at 140 DOP were subjected to digestibility trials at around 80, 110, and 140 DOP to estimate diet metabolizability and N balance (NBAL). Metabolizability decreased with feed restriction and was 63.3 ± 2.16, 55.7 ± 2.35, and 58.2 ± 2.30% at 0, 20, and 40% of feed restriction, respectively ( < 0.01). There was no effect of DOP on NE or the requirements of ME for maintenance (ME), which were 197 and 315 kJ/kg empty body weight (EBW), respectively, and the efficiency of ME utilization for maintenance (k) was 0.63. Similarly, DOP did not affect thedaily net protein requirements for maintenance (NP) estimated using the comparative slaughter technique (1.38 ± 0.512 g/kg EBW; = 0.003) or the NP estimated using NBAL (2.49 ± 0.594 g/kg EBW; < 0.01). The MP requirement for maintenance (MP) estimated using the comparative slaughter technique was not affected by DOP and was 3.22 g MP/kg EBW ( < 0.01). The efficiency of MP utilization for maintenance (k) was 0.43. The efficiency of ME utilization for pregnancy (k) increased with the progress of pregnancy and was 0.058, 0.10, and 0.19 at 80, 110, and 140 DOP, respectively. Similarly, the efficiency of MP utilization for pregnancy (k) increased with DOP and was 0.12, 0.21, and 0.43 at 80, 110, and 140 DOP, respectively. There was no evidence that pregnancy affected NE, ME, NP, and MP or k and k, which were also unaffected by DOP. However, k and k increased with pregnancy progress as a response to the physiological changes that pregnant females are subjected to.

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Section: Energy Requirements For Maintenancecontrasting

confidence: 90%

Energy and protein requirements for maintenance of dairy goats during pregnancy and their efficiencies of use1

Härter

Lima

Silva

et al. 2017

Journal of Animal Science

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“…Regarding to the biochemical alterations in goats with pregnancy toxemia, in the present study, we founded that there is a significant reduction in the serum glucose level in goats with PT, which may be attributed to decrease in the hepatic gluconeogenesis (Mills et al, 1986), with increase the energy requirements of the pregnant goats that carries two feti (Voicu et al, 1993), also decrease the endogenous glucose production may be developed as a result of decrease calcium levels, which occur during the period of pregnancy (Schlumbohm and Harmeyer, 2003), and may be due to the hyperketonemia produces adverse effect onenergy balance and glucose metabolism (Harmeyer and Schlumbohm, 2006). These results were in agreement with (Hefnawy et al, 2010;Gonza´ lez et al, 2011;Abdelaal et al, 2013).…”

Section: Discussionmentioning

confidence: 91%

Clinico-biochemical Examination of Pregnant Toxemic Goats with Special Emphasis on the Enzymatic and Hormonal Pattern

Attia¹,

Alam²

2017

Adv. Anim. Vet. Sci.

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| Pregnancy toxemia (PT) is a metabolic stress syndrome, occurring in does during the late stage of gestation; especially those with twins or triplets. This study was aimed to evaluate the biochemical and hormonal alterations associated with clinically pregnant toxemic goats. Forty clinicallyhealthy and toxemicpregnant goats were used. Pregnant goats with early toxemia had anorexia, depression, dullness and scanty feces, with pronounced acetone odor from the mouth, recumbency, and nervous manifestations were noticed in the untreated and progressed cases. Striking metabolic alterations in goats with PT showed a significant decrease in the serum glucose level while beta-hydroxybutyrate (βHB) showed a significant increase. Serum levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma glutamyl transferase (GGT), and alkaline phosphatase (ALP) showed a significant increase. Also, goats with PT showed a significant increase in the blood urea nitrogen and creatinine levels. Moreover, the hormonal profile showed a significant increase in the serum cortisol and insulin, while triiodothyronine (T3), thyroxine (T4) and growth hormone were decreased significantly in pregnant toxemic goats. Histopathologically, the liver showed fat globules distending the nuclei of the hepatocyte to the periphery with moderate lipidosis. These results suggest that the main cause of death among goats with PT may be due to the hepato-renal dysfunction. The increase in energy metabolites and hormonal alterations constitutes an important tool for the diagnosis and determination of the magnitude of clinically pregnant toxemic goats.Noura Elshahat abdEl-rhmaN attia 1 , rasha thabEt mEtwaly alam 2*

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“…In addition, litter weight can be roughly estimated from the sheep equations of ARC (1980). Alternatively, DLG (2003) published equations that describe the course of foetal development during the last third of pregnancy from data obtained by Voicu et al (1993) in Carpathian goats.…”

Section: Prediction Of Body Weight Growth Rate and Foetal Developmentmentioning

confidence: 99%

Nutrient limits in diets for growing dairy goats

Marín¹,

Pérez-Hernández²,

Pérez-Alba³

et al. 2012

Arch. med. vet.

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RESUMENEl objetivo del presente trabajo fue revisar el consumo de materia seca y las necesidades nutritivas de cabras lecheras de reposición estabuladas para establecer límites nutricionales aplicables a la formulación de dietas por programación lineal a mínimo coste. El diseño de dietas nutricionalmente adecuadas y económicas requiere que el nutricionista estime correctamente el consumo de materia seca y forraje y los aportes y las necesidades de nutrientes. La bibliografía revisada sugiere que el consumo total de materia seca de las cabras oscila entre los límites físico y fisiológico impuestos por la capacidad del tracto digestivo y las necesidades energéticas diarias. El efecto de llenado digestivo puede relacionarse con los carbohidratos estructurales de la dieta, mientras la saciedad metabólica se relaciona con la concentración energética de la dieta. El consumo mínimo de forraje necesario para mantener la salud ruminal es bajo, mientras que el consumo máximo de forraje está determinado probablemente por el contenido de fibra neutrodetergente de la dieta. Los aportes y las necesidades de energía y proteína calculadas según los dos sistemas de valoración más modernos son similares, por lo que es indistinto usar cualquiera de ambos para optimizar dietas. Las propuestas recientes para el cálculo de los aportes y las necesidades de calcio y fósforo ofrecen una mayor precisión.

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Study on the energy and protein requirements in goats

Cited by 7 publications

References 7 publications

Energy and protein requirements for maintenance of dairy goats during pregnancy and their efficiencies of use1

Energy and protein requirements for maintenance of dairy goats during pregnancy and their efficiencies of use1

Clinico-biochemical Examination of Pregnant Toxemic Goats with Special Emphasis on the Enzymatic and Hormonal Pattern

Nutrient limits in diets for growing dairy goats

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