Milk production of Tswana goats fed diets containing different levels of energy

Abstract

The aim of this experiment was to characterize the milk yield of the Tswana goat of Botswana. Twenty-one Tswana goat does were allocated to one of three diets formulated to provide energy for maintenance and a milk yield of either 1.5 kg/d, 1.0 kg/d or 0.5 kg/d. Intake, milk yield and kid growth rate was monitored for 14 weeks. Dry matter intakes of up to 5% of body weight were recorded. Energy intake and milk yield differed between treatments (p < 0.01). Daily ME intake for the low, medium and high-energy diets was 1.01, 1.42 and 1.64 MJ ME/kg metabolic weight; the corresponding milk yields were 0.47, 0.53 and 0.72 kg/day. Kid birth weight ranged from 2.6 to 2.9 kg, and daily gains over the 14-week period were 95, 116 and 128 g/day for the low, medium and high energy diets respectively. Milk output accounted for 62% of the variation in kid growth rate. It was concluded that Tswana goats have the potential to respond to increasing levels of energy intake by increasing milk yield to relatively high levels.

Effects of Water Stress on Zootechnical Physiological and Blood Parameters of Ouled Djellal Ewes in Algeria

“…Water stress had no significant influence on the rectal temperatures of the ewes as they were maintained within the standard range of 38-39.5°C. Casamassima et al [41] and Adogla-Bessa and Aganga [44] also found the same result in Lacaune ewes and Tswana goats, respectively. El-gawad [50] and Jaber et al [34] reported the same result for Nubian goats and Awassi ewes, respectively, which suffered from salinity stress.…”

“…The high salinity of drinking water seems to negatively influence heart rate by decreasing it, which does not seem to be the case in Ouled Djellal ewes that have experienced a 3day water restriction, as it is maintained within the standards advanced by Meyer [51] for sheep (70-80 bt/min). This result is in contrast to the Tswana goats, which were deprived of water for 72 hours and had a reduced heart rate [44].…”

“…The authors did not report any effect of water restriction on this parameter. Adogla-Bessa and Aganga [44] even suggested that food consumption per kilogram of metabolic weight increased when the water deprivation interval is 72 h in Tswana goats. These discrepancies could be explained by the nature of the feed distributed on the one hand and animal variability on the other.…”

The Relation Between Oxidative Status, Milk Quality and Conception Rate in Dairy Goats Supplemented With Vitamin C

“…Furthermore, when milk is the sole source of food to the preweaned kids, the general condition and the average daily gain of kids are a direct reflection of the amount and the quality of milk produced by the dam (Cimen andKaraalp, 2009 andMartínez-Gonzáleza et al, 2015). The amount of milk produced has a strong influence on kid growth, as 20-80% of the variation in WW was due to the volume of milk produced or suckled (Sibanda, 1992 andAdogla-Bessa andAganga, 2000). Due to the fact that, a close correlation was existed between the OS and mastitis in dairy animal a superiority of oxidizing processes can indicate a subclinical inflammation of the mammary gland.…”

Nutritional Studies to Evaluate the Productivity and Quality of Preserved New Variety of Hybride Maize Silage on : 1- Milk Production and Its Composition,Some Rumen and Blood Parameters, Feed Utilization and Economical Efficiency in Lactating Zaribi Goats .

“…Preserving green forages on the form of silage for minimal loss of nutritive value due to anaerobic fermentation of soluble carbohydrates to organic acids. (Adogla and Aganga , 2000) found that supplying the right amount of corn silage had the higher improved production of herds. Corn silage can be an economic source of nutrients for dairy animals, particularly on large farms where feeding can be mechanized ( Olker et al, 2009) and ( Wrobel, 2009) explained that microorganisms gas play important roll in silage to improve fermentation which evident by a rapid decline in pH.…”