Effects of tethering management on feed intake and behaviour of Tanzanian goats

Romney, D.L.; Sendalo, D.; Owen, E.; Mtenga, L.A.; Penning, P. D.; Mayes, R. W.; Hendy, C. R. C.

doi:10.1016/0921-4488(95)00753-9

Cited by 21 publications

(16 citation statements)

References 14 publications

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“…The lower intake rate with ryegrass may be explained by the low amount of biomass per bite, which characterises the prehension of grass forage by ewes (Orr et al, 2001). The 8 h grazing ewes had higher intake rates than the 22 h grazing ewes to counterbalance the shorter presence at pasture, in line with previous studies that found that short grazing is generally compensated by faster intake rate compared with grazing for the entire day (Romney et al, 1996) and that sheep can regulate intake rate as a function of the time allowance at pasture when herbage availability is high (Iason et al, 1999). Accordingly, 22 h grazing would have allowed the ewes to modulate herbage intake in smaller and more numerous meals.…”

Section: Discussionsupporting

confidence: 83%

Effects of ewes grazing sulla or ryegrass pasture for different daily durations on forage intake, milk production and fatty acid composition of cheese

Bonanno

Grigoli

Mazza

et al. 2016

animal

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Sulla (Sulla coronarium L.) forage is valued for its positive impact on ruminant production, in part due to its moderate content of condensed tannin (CT). The duration of daily grazing is a factor affecting the feed intake and milk production of ewes. In this study, the effects of grazing sulla pasture compared with annual ryegrass, and the extension of grazing from 8 to 22 h/day, were evaluated with regard to ewe forage intake and milk production, as well as the physicochemical properties and fatty acid (FA) composition of cheese. During 42 days in the spring, 28 ewes of the Comisana breed were divided into four groups (S8, S22, R8 and R22) that grazed sulla (S) or ryegrass (R) for 8 (0800 to 1600 h) or 22 h/day, and received no feeding supplement. In six cheese-making sessions, cheeses were manufactured from the 48 h bulk milk of each group. Compared with ewes grazing ryegrass, those grazing sulla had higher dry matter (DM) intake, intake rate and milk yield, and produced milk that was lower in fat and higher in casein. Ewes grazing for 22 h spent more time eating, which reduced the intake rate, increased DM and nutrient intake and milk yield, and reduced milk fat. Due to the ability of CT to inhibit the complete ruminal biohydrogenation of polyunsaturated fatty acids (PUFA), the FA composition of sulla cheese was more beneficial for consumer health compared with ryegrass cheese, having lower levels of saturated fatty acids and higher levels of PUFA and n-3 FA. The FA profile of S8 cheese was better than that of S22 cheese, as it was higher in branched-chain FA, monounsaturated FA, PUFA, rumenic acid (c9,t11-C18:2), and had a greater health-promoting index. The effect of short grazing time on sulla was attributed to major inhibition of PUFA biohydrogenating ruminal bacteria, presumably stimulated by the higher accumulation of sulla CT in the rumen, which is related to a higher intake rate over a shorter eating time. Thus, grazing sulla improved the performance of ewes, thereby increasing, especially with short grazing time, the nutritional properties of cheese fat.

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Section: Discussionsupporting

confidence: 83%

Effects of ewes grazing sulla or ryegrass pasture for different daily durations on forage intake, milk production and fatty acid composition of cheese

Bonanno

Grigoli

Mazza

et al. 2016

animal

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“…Thus, tethering management (frequency and location) is critical to overcoming the problem of decreasing herbage mass availability within the reach of the tethered animals. The negative effect of tethering on forage intake has also been reported for goats in Tanzania (Romney et al, 1996). Values for forage intake reported in this study agree with findings by Ayantunde et al (2001) for steers grazing natural pastures in another location in Niger.…”

Section: Article In Presssupporting

confidence: 93%

“…In addition, length of rope, frequency of changing the tethering location and animal species may affect the quality of diet selected. For mature non-productive goats in Tanzania tethered for 4 or 8 h, Romney et al (1996) reported that tethering had no effect on digestibility of the diet selected. This suggests that the effect of tethering on diet selection may vary with different ruminant species in view of their different grazing behaviour.…”

Section: Article In Pressmentioning

confidence: 98%

Implications of restricted access to grazing by cattle in wet season in the Sahel

Ayantunde¹,

Fernández-Rivera²,

Hiernaux

et al. 2008

Journal of Arid Environments

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To address the problem of restricted access to grazing by cattle in wet season in the Sahel, a grazing trial was conducted to study the effect of duration of grazing and grazing method on cattle nutrition and performance. Twenty-four intact steers weighing 259 kg (SD ¼ 62) were randomly allotted to four treatments to study the effect of the combination of grazing method (tethering and close herding) and grazing duration (6 and 9 h per day) on diet selection, faecal output, forage intake, grazing behaviour and weight changes in the wet season. Three esophageally fistulated steers were used in a cross-over design to sample diet selected by tethered and herded animals. Extrusa samples from esophageally fistulated steers and faecal output from intact steers were collected in weeks 6 and 9 of the experiment and grazing behaviour of the intact steers was observed in week 6. Tethered animals selected diets of lower organic matter digestibility (OMD) but tethering had no significant effect on crude protein. Close herded steers consistently consumed more forage than those tethered in both periods. Both grazing method and duration had significant effect on ingestion rate by the steers. Tethered steers had lower average daily gain than those herded. The results demonstrate that the common practice of tethering sedentary cattle in the wet season in the southern Sahel in West Africa reduces forage intake and consequently average daily gain. r

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“…The ramifications of these effects on productivity and dry matter intake (DMI) have not been investigated in detail. While some workers have demonstrated that ruminants are able to compensate for restricted foraging time (Smith 1961;Romney et al, 1996), the mechanism and limits of these strategies have not been investigated. This paper compares two methods of increasing the amount of eating time for cattle managed under traditional communal grazing systems of southern-central highlands of Ethiopia.…”

Section: Introductionmentioning

confidence: 98%

“…Typically, the animals are herded to grazing in the early morning and then returned to the kraal during the late afternoon. Control of grazing animals is generally maintained either by herd-boys (Bayer and Otchere, 1985) or by tethering in the case of sheep and goats (Romney et al, 1996). The time at which animals are taken out to graze depends on the farming system and the season of the year.…”

Section: Introductionmentioning

confidence: 99%

The effect of extended grazing time and supplementary forage on the dry matter intake and foraging behaviour of cattle kept under traditional African grazing systems

Smith

Cuddeford²,

Pearson³

2006

Trop Anim Health Prod

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An experiment was carried out at Alemaya University in Ethiopia to investigate the effect of night kraaling on the dry matter intake (DMI), live weight gain (LWG) and foraging behaviour of Ogaden cattle. Three groups of four animals were given either 7 h access to pasture per day, simulating traditional grazing (TG) practice; extended grazing (EG) access for 11 h per day; or traditional grazing access plus a nocturnal forage supplement (TF). Live weight gain, DMI and foraging behaviour were measured during the late dry season (EP1) and the wet season (EP2). None of the treatments had any significant effect on either DMI or LWG during EP1 or EP2. Extending pasture access time from 7 h to 11 h did not significantly increase the amount time spent grazing, but grazing intensity was significantly (p < 0.05) reduced during the non-common grazing hours. Step rate was significantly lower (p < 0.01) during EP2 than during EP1 and bites per step were significantly higher (p < 0.001) during EP2 than EP1, indicating that animals had to travel a shorter distance before selecting material to eat during the wet season (EP2). Providing supplementary forage (TF) had no significant effect on any measured parameter. In this study neither of the two low-cost methods (EG and TF) of improving access to forage had any beneficial effect on cattle productivity. It is concluded that, under the prevailing conditions, the traditional grazing practices of this part of Ethiopia do provide sufficient pasture access time to achieve daily voluntary food intake.

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Effects of tethering management on feed intake and behaviour of Tanzanian goats

Cited by 21 publications

References 14 publications

Effects of ewes grazing sulla or ryegrass pasture for different daily durations on forage intake, milk production and fatty acid composition of cheese

Effects of ewes grazing sulla or ryegrass pasture for different daily durations on forage intake, milk production and fatty acid composition of cheese

Implications of restricted access to grazing by cattle in wet season in the Sahel

The effect of extended grazing time and supplementary forage on the dry matter intake and foraging behaviour of cattle kept under traditional African grazing systems

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