Environmental influences on preweaning mortality and reproductive performance of Red Sokoto does

Awemu, E.M.; Nwakalor, L. N.; Abubakar, B.Y.

doi:10.1016/s0921-4488(99)00058-9

Cited by 57 publications

(40 citation statements)

References 6 publications

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“…Similarly, a previous study reported greater hazard during all postnatal periods in male compared with female lambs (Sawalha et al, 2007). In addition to other factors, a relatively poor homeostasis in the buck kids may, at least in part, contribute to the low survival rate generally reported in males compared with females among various breeds of goat kids (Awemu et al, 1999;ElAbid and Abu Nikhaila, 2009) and lambs (Turkson and Sualisu, 2005). Although more studies are needed to substantiate this hypothesis, these corroborative findings may imply that the female newborns of small ruminants have more efficient mechanisms of responding to postnatal challenges than their male counterparts.…”

Section: Discussionmentioning

confidence: 93%

Influences of breed, sex and age on seasonal changes in haematological variables of tropical goat kids

et al. 2017

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Abstract. The influences of breed, sex and age on seasonal changes in haematological variables of kids (1-4 months old) belonging to Red Sokoto (n = 60) and Sahel (n = 60) goats were studied at the peaks of the cold-dry, hot-dry and rainy seasons in a West Africa Guinea savanna climate. The results showed that, during the hot-dry season, Sahel goat kids had significantly higher (P < 0.05) packed cell volume (PCV) and red blood cell (RBC) count but lower (P < 0.05) mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH), mean corpuscular haemoglobin concentration (MCHC) and total leucocyte count than Red Sokoto kids. Similarly, younger kids of both breed had significantly higher (P < 0.05) PCV and RBC but lower MCV, MCH and MCHC compared with the older kids during the hot-dry season. Younger kids (1-2 months) of both breeds exhibited significantly (P < 0.05) high PCV and RBC but low MCH and MCHC during the hot-dry season as compared with the cold-dry and rainy seasons, with the magnitude of the change being greater in Sahel kids. More remarkable seasonal fluctuations in haematological parameters were observed in buck kids than doe kids of both breeds. Multivariate analysis revealed a clear distinction between the change in haematological parameters during the cold-dry as compared with the hot-dry and rainy seasons, with MCV having the strongest discriminating power (0.91 * ). In conclusion, breed, age and sex variations in haematological variables of goats were more pronounced in the hot-dry season, during which the seasonal changes were more dramatic in kids of Sahel goats, as well as in younger and male kids of both breeds. These findings may be useful in the management of tropical goat kids in different seasons.

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Section: Discussionmentioning

confidence: 93%

Influences of breed, sex and age on seasonal changes in haematological variables of tropical goat kids

et al. 2017

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“…Al-Najjar et al (2010) reported that the mortality rate of kids from birth to weaning ranges from 32% to 40% in different goat breeds. Numerous researches have stated that kid birth weight, litter size, sex and birth season affect the pre-weaning survival of kids (Awemu et al 1999, Lehloenya et al 2005, Al-Najjar et al 2010, Snyman 2010. Also, environmental factors such as temperature, disease and malnutrition are mostly considered to contribute to kid mortality (Awemu et al 1999).…”

Section: Discussionmentioning

confidence: 99%

The effect of estrus synchronization programmes on parturition time and some reproductive characteristics of Saanen goats

Şen

Önder

2015

Journal of Applied Animal Research

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The aim of the present study was to determine the effect of estrus synchronization programmes on parturition time and some reproductive characteristics of Saanen goats. Estrus of Saanen goats was synchronized as follows: by use of intravaginal sponges containing 30 mg flugestone acetate for 11 days following IM injection of 500 IU PMSG (group PP; n = 80) or only intravaginal sponges (group P; n = 80) and natural estrus (control; C, n = 50). Forty-eight hours after removing intravaginal sponges, all goats were introduced to Saanen bucks. Kidding rate and litter size of goats in the PP group were higher than those of goats in the C and P groups (P < .05). Neonatal mortality rate of kids from goats in the PP group was found higher than those of goats in the C and P groups (P < .05). The length of kidding period in goats of group C was longer than goats in the P and PP groups (P < .05). Births showed a unimodal distribution, with maximum parturition at midday and minimum parturition at midnight in all goats. The parturition that occurred during daytime hours in goats of P and PP groups was more than goats in the C group (P < .05). The results of this study may suggest that estrus synchronization shortened the length of the kidding period, concentrated parturition time during daylight hours and increased reproductive performance in Saanen goats. ARTICLE HISTORY

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“…This is in opposition to SINGH (1985) who found a significant effect of birth type on birth weight and a negative correlation between both. SINGH et al (1990) and AWEMU et al (1999) proofed a significant influence of birth type on survivability of kids. Besides rectal temperature 3 hours p.p., factors regarded as possible vitality parameters like time span from birth to first standing and colostrum intake were not influenced by birth weight.…”

Section: Vitality Parametersmentioning

confidence: 94%

Growth, carcass and meat quality parameters of purebred and crossbred goat kids in extensive pasture

Herold

Snell²,

Tawfik

2007

Arch. Anim. Breed.

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Growth, carcass and meat quality parameters of purebred and crossbred goat kids in extensive pasture AbstractGoats are more and more used as shrub-fighters in landscape conservation. Important traits for the extensive production system are vitality and robustness but also acceptable meat production of kids during the grazing period. To investigate possible selection traits for "landscape conservation suitability", 35 kids were investigated for vitality parameters directly after birth whereas all-in 65 kids were investigated for performance traits under extensive grazing conditions. Birth weight as a parameter for vitality and survivability of kids was significantly influenced by sex, genotype and age of doe. Besides rectal temperature 3 hours p.p., other factors regarded as possible vitality parameters were not influenced by birth weight. Birth weight had a significant influence on daily weight gain during the extensive period; kids with higher birth weight showed slightly better weight gain. Birth weight had also a significant effect on some carcass parts, indicating that higher birth weight implies a high probability of a better carcass performance especially in some valuable parts. Still, the effect of the genotype on carcass performance was considerably higher than any other investigated effect. As a result of the present study, there are indications that birth weight can be taken as a parameter for kids' vitality. Also, it is indicated that goats of Cashmere type as fibre animals are not appropriate for landscape management whereas crossbred animals with a meat, dairy and fibre component in their genotype showed to be a vital animal with acceptable efficiency also in harsh conditions and with an average meat and carcass performance.

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Environmental influences on preweaning mortality and reproductive performance of Red Sokoto does

Cited by 57 publications

References 6 publications

Influences of breed, sex and age on seasonal changes in haematological variables of tropical goat kids

Influences of breed, sex and age on seasonal changes in haematological variables of tropical goat kids

The effect of estrus synchronization programmes on parturition time and some reproductive characteristics of Saanen goats

Growth, carcass and meat quality parameters of purebred and crossbred goat kids in extensive pasture

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